<template>
    <div>
        <div ref="refChart" style="width: 100%;height:15rem;"></div>
    </div>
</template>
  
<script setup lang="ts">
 import { RequestStatisticgetFittingByBrand2 } from "@/api/path/index.js";
import {onUnmounted, onMounted, ref,markRaw } from 'vue';
import * as echarts from 'echarts';
type EChartsOption = echarts.EChartsOption;
const refChart = ref();
const chartInstance = ref();
const chartData = ref();

// 获取接口数据
const getData = () => {
  return new Promise((resolve, reject) => {
    RequestStatisticgetFittingByBrand2()
      .then((res: any) => {
        chartData.value = res.resultObj;
        resolve(res.resultObj);
      })
      .catch((err: any) => {
        reject(err);
      });
  });
};
onMounted(async () => {
  await getData();
  // 图表初始化
  initChart();
  // 调用Echarts图表自适应方法
  screenAdapter();
  // Echarts图表自适应
  window.addEventListener('resize', screenAdapter);
});

const initChart = () => {
  chartInstance.value =markRaw(echarts.init(refChart.value))
  const initOption: EChartsOption ={
    grid: {
      left: '3%',
      right: '3%',
      bottom: '6%',
      top:'20%',
      containLabel: true,
    },
    tooltip: {
      trigger: 'axis',
      axisPointer: {
        // Use axis to trigger tooltip
        type: 'shadow' // 'shadow' as default; can also be 'line' or 'shadow'
      }
    },
    xAxis: {
      type: 'value'
    },
    yAxis: {
      type: 'category',
      data: chartData.value.brand
    },
    series: [
      {
        name: 'Direct',
        type: 'bar',
        stack: 'total',
        itemStyle: {
          color: '#007fff'
        },
        label: {
          show: true
        },
        emphasis: {
          focus: 'series'
        },
        data: chartData.value.num
      }
    ]
  };
  // 图表初始化配置
  chartInstance.value?.setOption(initOption);
};
const screenAdapter = () => {
  // 手动的调用图表对象的resize 才能产生效果
  chartInstance.value.resize({width:'auto', animation: { duration: 300 } });
};
onUnmounted(() => {
  // 销毁Echarts图表
  chartInstance.value.dispose();
  chartInstance.value = null;
  // Echarts图表自适应销毁
  window.removeEventListener('resize', screenAdapter);
});
</script>
<style lang="scss" scoped></style>